If that doesn't do it, then she wants treats. I bet she's gotten treats from you in the past, and she will remember that. She knows if it happened once it can happen again. It's how chickens' minds work.

I recall having an older girl like that. She would go crazy, trying to get into buildings to lay that she had never been in, let alone laid in! She went on like that for two weeks or so, then resumed her normal behaviour. Strange, but there you go...